Uploading firmware from local dir throws Memory Error when running on Windows 10 VM

[tanmayx]

ucscentralsdk version: Latest from github
Python version: 3.5.2
Operating System: Windows 10 VM

Description
Trying to upload firmware using firmware_add_local API. It is throwing memory error.

What I Did
Ran the following command-
firmware_add_local(handle=handle, local_path=local_dir_path, file_name="ucs-k9-bundle-infra.3.1.2b.A.bin")

The output is -
c:\users\tanmay\appdata\local\programs\python\python35-32\lib\site-packages\ucscentralsdk-0.9.0.0-py3.5.egg\ucscentralsdk\ucscentralgenutils.py in encode_file_data(file_path)
227 def encode_file_data(file_path):
228 with open(file_path, "rb") as f:
--> 229 mmapped_file = mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)
230 return mmapped_file.read(mmapped_file.size())
231

OSError: [WinError 8] Not enough storage is available to process this command

[tanmayx]

Rechecked it with python 2.7.12 and it works fine. Hence the issue is because of latest python version 3.5.2

[tanmayx]

Now the issue is observed with python 2.7.12 also. With this version, it sometimes upload successfully and sometimes it throws error. It is in-consistent, it uploads one file but if tried to upload once again after deleting it from central, it throws error.
Was able to upload classic A and B bundles.
Never able to upload classic C bundle and mini A bundle.

With version 3.5.2, it never uploaded successfully even once.